[Land-speed] Traction at Bonneville

[Benn]

So, assuming dry concrete has a coefficient of friction of 0.7-1.0, it 
sounds like the coefficient of friction is about 0.5 to 0.7, which would 
correspond at the upper end to worn, smooth asphalt or concrete with typical 
street tires.  And of course, like other aspects of life, you still have to 
watch out for the "wet spots".
Benn

----- Original Message ----- 
From: "Jim Dincau" <jdincau at qnet.com>
To: "land Speed List" <land-speed at autox.team.net>
Sent: Monday, September 14, 2009 11:51 AM
Subject: [Land-speed] Traction at Bonneville


> FWIW
>     This year at Speedweek my brother made a rig to drag a piece of tire 
> tread on the salt and measure the force required. He says;
>
>>From my testing, Bonneville traction is roughly 67% of dry concrete, which
> is the same as dry Asphalt.
>
> Again your mileage may vary.
> Jim in Palmdale _______________________________________________
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